/Engine/Source/Runtime/CoreUObject/Public/UObject/LinkerInstancingContext.h
Add a mapping from a top level asset path (/Path/To/Package.AssetName) to another.
void AddPathMapping ( [FSoftObjectPath](API\Runtime\CoreUObject\UObject\FSoftObjectPath) Original, [FSoftObjectPath](API\Runtime\CoreUObject\UObject\FSoftObjectPath) Instanced )